1. Please drag down the notification bar from the home screen.
2. Tap on Quick Settings.
3. Tap on Settings.
4. Tap on About.
5. Tap on Software Information.
6. Tap on More.
7. Tap on Build Number 6 times.
8. You will see a message saying "You are now a developer".
9. Return to you settings menu and you will find the Developer's options is now enabled.

If you have a Google Account set up on your phone, you may be able to reset your screen lock pattern. Tap Forgot pattern on the lower right corner of the screen, and then enter your Google Account and password.

If you didn't set up a Google Account, you may need to perform a hard reset to gain access to your phone. Take note, though, that performing a hard reset will erase all data content from your phone.

When you setup the screen lock using your fingerprint you will be prompted to setup a set of password goes along with the fingerprint as back up. When the device is unable to recognized your fingerprint due to any reason you will have to option to enter the back up password to unlock your device instead.

Connect your phone to your computer using the supplied USB cable, and then copy your files over to your phone.

To find out how, go to our HTC support site. Select your phone model, and then under How-tos:
See "Copying files to or from the phone storage" to copy files to the phone's built-in storage.
See "Copying files to or from the storage card" if your phone model supports a storage card.

Connect your phone to your computer using the supplied USB cable, and then copy your files over to your phone.

To find out how, go to our HTC support site. Select your phone model, and then under How-tos:
See "Copying files to or from the phone storage" to copy files to the phone's built-in storage.
See "Copying files to or from the storage card" if your phone model supports a storage card.

This message means that the USB Driver for your phone is not yet installed on your computer. Please install the latest HTC Sync Manager for the USB Driver. (http://www.htc.com/www/software/htc-sync-manager/)

Your fingerprint data will not be collected or stored by HTC in anyway. The data will only be saved locally on your device. The device automatically encrypts the fingerprint data and saves it in the root section of the device.

1. Check the network specs of your phone in the HTC website. (Go to the website of the country where you bought the phone.)
2. Check the supported network band in the country where you will be traveling.
3. Check if cross-country roaming has been activated by your mobile operator.

You can set the Recent Apps button to function as your menu button. Go to Settings, tap Display, gestures & buttons > Recent apps button, and then choose how you want to open the menu (such as to press or press and hold the Recent apps button).

NOTE:
A data connection such as 3G/GPRS is required. Contact your mobile operator for information on data charges. Extended use of your data connection, Wi-Fi, or Bluetooth may drain the battery faster.

The easiest way is to store your contacts in your Google Account. This way, you can just sign in to your Google Account on your new phone and your contacts will be synced to your phone.

There are also other ways for transferring contacts:

1. Sync with your computer: Sync the contacts from your old phone to your computer, and then use HTC Sync or HTC Sync Manager to sync your phone with your computer's Microsoft Outlook, Outlook Express or Windows Contacts.
2. Social network accounts: Log in to your favorite social networks to import contact information from them.
3. SIM card: Import all your SIM contacts to your phone.
4. Microsoft Exchange ActiveSync: Sync your work contacts from the Microsoft Exchange ActiveSync Server in your workplace.
5. Transfer: Use the Transfer app to transfer not only your contacts, but also calendar events and text messages from your old phone to your phone.

When your phone finds contacts that can be merged, you’ll see a link notification when you open the People app.
1. On the People tab, tap the Link suggestion notification when available. You'll see a list of suggested contacts to merge.
2. Choose the contacts you want to merge.

Some HTC phone models may not support this feature. If your phone doesn't have this feature, use your computer to access your Gmail. Gmail on the web allows you to merge duplicate contacts.